Evaluación de los niveles de presión sonora en el área urbana del cantón Biblián, provincia del Cañar

Abstract

In this project, the noise pollution in the urban area of the town of Biblian, in the province of Cañar, was evaluated. I order to do that, the sound pressure levels were measured for the period of sixty minutes in fifty-one define points considering the following judgements: the first, a technical one based on the experience of geo-statistic models, and the second one according to geographic delimitation. The measuring was done during peak hours, from 7:10 to 09:20, 12:00 to 14:10 and 17:00 to 19:10, the results obtained were sustained-equivalent-corrected sound pressure levels (LKeq) fluctuating between 45,19 dB(A) - 75,57 dB(A), 45,24 dB(A) - 72,12 dB(A) and 47,52 - 74,66 dB(A) respectively. At the same time, the vehicle circulation was determined by means of a manual gauge. Likewise, when comparing these results to the current environmental regulation, averagely, 78 % of the peaks overpassed the regular numbers. On the other hand, the level of bonding between the LKeq and vehicle circulation was obtained by means of the Pearson´s correlation coefficient, which were positive and significant during the periods of time with results of 0,81, 0,82, and 0,79. By using the sound maps, it was noticed that he urban area of Biblián is a noisy one, being the vehicle circulation itself the main emitting source. However, noise levels below 55 dB(A) were registered in certain areas with a little traffic, generally locatedin the north, east, and south rural areas of the study zone.